Photothermal refractive glasses for holographic-grating neutron-optical elements
We use materials that are sensitive to light, combined with holographic techniques to produce transmission gratings for neutron-optics. The treated materials exhibit a periodic neutron refractive-index pattern, arising from a light-induced redistribution of the constituents. To keep rocking curves wide for adjustment and collimation reasons, novel materials should reach high reflectivity via increasing their constituents' contrast in coherent scattering length. One candidate material new to the field are photothermal refractive glasses (PTR glasses) that could enable diffraction at much larger Bragg angles than obtained with materials investigated previously. We intend to measure neutron diffraction from holographic gratings recorded in PTR glasses.
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KLEPP Juergen; FALLY Martin; GELTENBORT Peter; JENKE Tobias; PRUNER Christian and ROCCIA Stephanie. (2018). Photothermal refractive glasses for holographic-grating neutron-optical elements. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.3-14-390
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